Disk separator



April 10, 1928. 1,665,548

. C. C. INGRAHAM DISK SEPARATOR Filed June '7, L926 2 Sheets-Sheet 1 li mu oi/ (3601/12; Lifi? 0117 April 10, 1928. 1,665,548

(1. c. INGRAHAM DISK SEPARATOR Filed June? L925 2 Sheets-Sheet 2 [.7 20 (7101/65 6 fiifii'a/mm $9213.47

Patented Apr. 10, 1928.

UNITED STATES PATENT OFFICE.

CHARLES C. INGRAHAM, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR T CARTER-MAY- HEW MANUFACTURING 00., OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNESOTA.

DISK SEPARATOB.

I My invention relates to disk separators of the type known to thetrade as the Carter- Mayhew disk separator, and which separator is disclosed and broadly claimed in Letters Patent of the United States No. 1,364,247, of date January 4, .1921, entitled Grain separator, and provides certain improvements therein whereby the etficiency of the machine is increased and the operation of the machine generally improved.

In machines of the above character, grain is moved through a containerand in the container are a plurality of pocketed separating disks secured to a common approximately 16 horizontalrotary shaft. The pockets in the disks are of such size and form that they will receive certain kinds of material, such as wheat, and will reject certain other kinds'of material, such as oats. In the operation of 2 the commercial Carter-Mayhew separator, for the separation of wheat from oats, for example, the oats will be rejected by the pockets and the wheat will be picked up by the pockets, carried upward and, by cen- 2 trifugal'force and gravity, will be thrown out of the pockets into a receiving hopper located at one side of the main container.

Extending along the receiving hopper is a repeat or return trough, the main port-ion of which is normally covered by a sectional deflecting board Working in the repeat trough is a spiral conveyor that carries stock from the latter back into the receiving end of the main container. At a certain point in the operation of the machine, the disks will begin to carry over some of the oats with the wheat and, at such point, the sections of the deflecting board will be turned into open position, so that the commingled wheat and oats will be delivered into the repeat trough and fromthence delivered back into the receiving end of the main container.

My present invent-ion is directed particularly to improved means for delivering the commingled stockfrom the repeat trough back into the container and for commingling the same with the main stock where the latter is delivered into the container.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig, 1 is a view chiefly in side elevation, but with some parts broken away and with some parts sectioned, illustrating a disk separator of the Carter-Mayhew type, embodying1 the features of mypresent invention; an V Fig. 2 is a section taken on the line 2+2 of Fig. 1.

The main container 3 is a horizontall disposed drum-like structure provided wit heads land 5 and supported by legs 6. At its receiving end, the container 3 is provided with a lateral intakespout 7 shown as equipped with a flow-controlling gate 8 and at its delivery end with a discharge spout 9, V

the latter, as shown, being applied to and communicating with an opening in one side of the head 5. At one side, the container 3 opens 1nto a receiving hopper 10, the upper portion of which extends the full length of said container and the bottom of which is contracted and terminates in a discharge opening 11. Extending thefull length of II. the contalner 3 and partly within the hopper 10 1s a repeat trough 12, the inner side of which joins the adjacent sideof the contamer 3, forming therewith a quite sharp edge 13 that is located far above the bottom of the container. As shown, the hopper 10 is provided with a hinged cover 14 and the repeat trough-'12 is provided with a cover made up of hinged sec-tions l5 The sections 15 normally rest on the edge 13and form a deflecting board that will carry wheat dropped thereon over the trough 12 and into the hopper 10.

Extended axially through the container 3 and journaled' in suitable bearings on the 1 heads 4: and 5 thereof is a shaft 16 which, at one outer end, is shown as provided with a pulley 17 over which a power-driven belt may be run to, rotate said shaft.

The pocketed separating disks are laterally spaced and'carriedbythe common shaft 16. As shown, said disks 18 are of annular form and are provided with radial spokes 19 by which they are connected to the shaft 16. The pockets in the disks 18 are'indiv' cated by the numeral 20 and for the separation of wheat and oats, will be of such size and formthat they will pick up and contain the wheat, but will reject the'oats. The

ward the first or adjacent separating disk,

Extended through the repeattrough 12 and journaled in suitable hearings in the ends thereof is a shaft22 that is equipped with a spiral conveying flange 23. The shaft 22 is rotated in a direction reverse to the direction of rotation of the but at a relatively low speed, and, as shown, this drive is accomplished by a sprocket chain 2 1 that runs over a sprocket 25 on the shaft 16 and over an intermediate sprocket 25 secured to a spur gear 26 that meshes with a spur gear 27 on the adjacent end of the shaft 22.

The spiral conveyor 23 is thus arranged so'that it will feed the stock from the front back'toward the rear or receiving end of the container. In line with the agitator blades 21 andintake spout 7, the repeat trough 12 is terminated in an upwardly extended hood or inverted discharge spout 28, theopen upper end of which-is irn1nediately above the edge 13. Within the hood or hooded portion28, the spiral conveyor 23 is terminated and the shaft 22 is therein provided with radial blades or which, under rotation in the direction of the arrow marked adjacent thereto on Fig. 2, serve to elevate the returned stock or grain and to throw or crowd the same out through the spout 28 and back intothe main container 3.v I

The spiral conveyor 23 illustrated has a right-hand trend and, hence, should be rotated in the direction already described, but as is obvious, if it had a left-hand trend, it would require rotation in arev'erse direction from thatdescribed. a

Smmmwy of operation.

The commingledstock, assumed to be wheat and oats, will be delivered into the receiving end of the machine through the intake spout 7 and will be progressivelyand successively subjected to the action of the several pocketed vance flow of the stock will be chiefly separating disks. The adthrough the openings in the disks. Under rotation of the disks through the co1nmingled mass, the wheat will be picked up while the oats, because of jected, and the wheat lodged in" the pockets will be carried by the disks upward andover toward the receiving hopper 10 and will be discharged from the pockets under the combined action of. centrifugal force shaft 16,-

.wheat and oats fans 29,

board, as is evident, carry the wheat over the repeat trough 12and into the hopper 10.

At some point where most of the good wheat has been removed from the commingled stock, "the disks will begin to pick up some oats, and at such point, the sections 15 of the deflecting board should be turned over and outward so as to uncoverthe repeat trough 12 and permitthe oommingled to be; then delivered into said repeat trough. The commingled stock thus delivered into therepeat trough will, 7

by the spiral conveyor 23, be carriedback toward the receiving end of thecontainer andinto the hooded portion 28,vvhere the accumulating stock. will be acted upon by the 'elevatingblades 29 and,,by the latter, thrown and crowded upward through the spent 28 over the edge 13 and back into the receiving end of the main container.

Thestock thus, returned to the receiving end ofthe container will be acted upon by the oblique agitating blades 21 and will be thoroughly commingled with the inflowing stock and therewith pressed toward the first separating disk. I v

'Theabove is what is believed to be the preferred embodiment of the present invention, but it will be understood that va' rious modifications thereof may be made, all within the scope of the invention herein dis' closed and defined in the claims, i

' a What I claim is;

1. In a separator the kind described,

the combination with a container and a plu-' rality. of pocketed separating disks working therein, of a repeat trough at one side of 7 said conta ner arranged to receive commingledstockfrom certain of saidldisks, a conveyor working in saidrepeat trough, and means at the delivery therefrom gdirectl back into the'receiving end of said container, L V v 1' 2.-1na.separator [of the kinddescribed,

a d a ai r e trough. for delivering the returned stock the combination with a container landa plurality of pocketed separating disks workin therein, of a repeat trough lat one side 0 said, container arranged to receive commingled stock from certain of saiddisks a conveyor working in saidrepeat trough, ele

vating means at the delivery'end of said r'epeat trougl for deliverlng the returnedstock therefrom peat trough, the sectionsthereof being addirectly back into thereceiving enjdof said container, a receiving hopper extainer and trough, a spirial conveyor working in said repeat trough, and elevating blades on the delivery end of said conveyor, operative to elevate the returned stock and to deliver the same directly back into the receiving end of said container.

4. The structure defined in claim 3 in combination with means for rotating said disks and spiral conveyor, the latter at a higher speed than the former.

5. The structure defined in 1 claim 3 in which said repeat trough, at its delivery end, has an inverted spout-like hood in line with the elevating blades on said conveyor.

6. The structure defined in claim 1 in combination with an agitator arranged to rot a te with said disks and working at the receiving end of said container and'operative on the stock returned to said container from said repeat trough.

7. The structure defined in claim 1 in combination with an agitator arranged to rotate with said disks and working at the receiving end of said container and operative on the stock returned to said container from said repeat trough, the said agitator comprising propeller-acting blades arranged to crowd the stock toward the first or adjacent disk.

8. In a separator of the kind described, the combination with a container and pocketed separating disks working therein, of a propeller-acting agitator mounted to rotate with said disks at the receiving end of the container, said agitator being of substantially as great diameter as said disks.

9. In a separator of the kind described, the combination with a container and pocketed separating disks working therein, of a propeller-acting agitator mounted to rotate with said disks at the receiving end of the container, said container having an intake spout at its receiving end arranged to deliver the commingled stock primarily to said agitator, said agitator being of substantially as great diameter as said disks.

10. In a separator of the kind described, I

CHARLES C. INGRAHAM. 

